a clean C library for processing UTF-8 Unicode data
copied from cf-staging / libutf8procconda install conda-forge::libutf8proc
conda install conda-forge/label/broken::libutf8proc
conda install conda-forge/label/cf202003::libutf8proc
utf8proc is a small, clean C library that provides Unicode normalization, case-folding, and other operations for data in the UTF-8 encoding